A seal for fitting around a stoma, comprising a single, flexible, adhesive material having a body in the shape of a split ring, having a first face for attaching to a peristomal surface, a second face for attaching to an ostomy appliance, a wall extending from the first face to the second face and providing an outer wall surface and an inner wall surface which defines an aperture for receiving the stoma, and a first end and a second end spaced apart to define an opening which extends from the outer wall surface to the inner wall surface, wherein the single material and oval, split ring shape of the seal causes the seal to be manipulable to fit around the stoma. Related methods and systems are also disclosed.
